@book { FinanzielleFreiheitdurchAktien,
    title = "Finanzielle Freiheit durch Aktien",
    author = "Philip {Leuthe}",
    year = "2024",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1463427"
}